Kilocalorie to Joule Converter
Convert kilocalorie to joule instantly.
Standard energy units
joule 418400
kilojoule 418.4
calorie 100000
watt-hour 116.222
kilowatt-hour 0.1162
BTU 396.565
Fun comparisons
apples eaten 🍎~ 1.21
hours of 100W bulb 💡~ 1.16
marathons run 🏃~ 0.14
full car tanks of fuel ⛽~ Less than 0.01
How to convert kilocalorie to joule
Enter your energy value in kilocalorie and see the result in joule instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Kilocalorie (kcal) is the food Calorie used on nutrition labels in the US and UK; joule is the SI energy unit used in physics. One kilocalorie equals 4184 joules.
Need the opposite direction? Convert joule to kilocalorie just as easily, or explore all our energy conversions.
Common kilocalorie to joule conversions
| Kilocalorie (kcal) | Joule (J) |
|---|---|
| 1 | 4184 |
| 5 | 20920 |
| 10 | 41840 |
| 25 | 1046 |
| 50 | 2092 |
| 100 | 4184 |
| 500 | 2092 |
| 1000 | 4184 |
Frequently asked questions
1 kilocalorie equals 4184 joule.
Multiply by 4184. For example, 5 kcal = 20920 J.
300 kilocalories equals 1,255,200 joules.
1 joule equals 0.000239006 kilocalorie.
100 kilocalorie equals 4184 joule.